RU2511784C2 - Ejection device for cooling of recirculating water - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: invention relates to power engineering and can be used in recirculating water supply systems of process equipment cooled with water. An ejection device for cooling of recirculating water of a cooling system of production equipment consists of a housing with vertical and horizontal ejection channels equipped with nozzles and an air outlet shaft provided in its upper part with drip pans, a receiving tank connected via main lines, to which pumps are connected, to the production equipment cooling system, to a nozzle of a vertical ejection channel and to a nozzle of a horizontal ejection channel; with that, in the lower part of the housing there is a main line for water draining from the housing to the receiving tank, and additional ejection chamber with one or more nozzles inside it, with a drip pan in its upper part and one or more air receiving openings in its lower part, nozzles arranged in an additional ejection chamber are connected through the main line to the production equipment cooling system; in the lower part of the additional ejection chamber there is a main line for water draining from it to the receiving tank, in which there is a partition wall with a hole in the lower part, which separates the zone of water drain from the housing to the receiving tank from the zone of drainage to it from the additional ejection chamber, the air receiving openings of which can be equipped with forced air supply elements. A temperature sensor is installed in the receiving tank, which is connected via electric circuits to speed converters of electric motors of pumps for water supply for cooling of equipment and speed converters of electric motors of forced air supply elements respectively; with that, a rotary wind motor is arranged on the ejection device housing after drip pans.

EFFECT: invention allows providing optimum temperature of cooling water in an automatic mode, which is supplied to process equipment, depending on heat load of process equipment and changes of ambient air temperature.

1 dwg

Description

The invention relates to the field of power engineering and can be used in water recycling systems of technological equipment cooled by water, for example, compressor stations, industrial refrigerators, condensers, etc.

Known ejection device for cooling the circulating water of the cooling system of industrial equipment, comprising a housing with vertical and horizontal ejection channels, equipped with nozzles and an air exhaust shaft equipped with droplet eliminators in its upper part, a receiving tank connected to the mains into which the pump is connected, with a production cooling system equipment, the nozzle of the vertical ejection channel and the nozzle of the horizontal ejection channel, while in the lower part of the housing to the highway for draining water from the housing into the receiving tank (RU 15930 U1).

The disadvantage of this ejection device is that hot water flows directly from the cooling system of the production equipment to the ejection shaft, where it is mixed with water cooled in the ejection channels; as a result, the temperature of chilled water entering the cooling system of production equipment rises significantly; in addition, hot water entering the air discharge shaft causes the formation of a vapor-air droplet plug in the upper part of the shaft, which significantly complicates the ejection process in the ejection channels, which significantly reduces the efficiency of the device (specific heat removal is the ratio of thermal energy removed from the cooled equipment, to the area of the device for cooling circulating water).

The closest in technical essence and the achieved effect is an ejection device for cooling the circulating water of the cooling system of industrial equipment, comprising a housing with vertical and horizontal ejection channels equipped with nozzles and an air exhaust shaft equipped with droplet eliminators in its upper part, a receiving tank connected by highways, which includes a pump, with a cooling system for production equipment, a nozzle of a vertical ejection channel and a nozzle horizontal ejection channel, while in the lower part of the casing there is a line for draining water from the casing to the receiving tank, the device is equipped with an additional ejection chamber with one or more nozzles inside it, with a droplet eliminator in its upper part and one or more air intake windows in its lower part moreover, nozzles placed in an additional ejection chamber are connected by a highway to the cooling system of production equipment, a drain line is made in the lower part of the additional ejection chamber ode therefrom into the receiving tank, while in the receiving tank is formed with an opening in the partition bottom of the separating zone into the receiving drain water from the tank body from the discharge zone in ejection thereof from the additional chamber; the air intake windows of the additional ejection chamber can be equipped with forced air supply elements (RU2349851 C1).

Significant disadvantages of the above ejection device for cooling circulating water (prototype) is the lack of automatic control of the temperature of the cooling water supplied to the production equipment and ensuring the optimal operating mode of pumps and forced air supply elements, which leads to an increase in the consumption of electric energy for own needs. The potential energy of significant volumes of turbulent flows of heated air removed from the ejection device into the atmosphere is not used.

For example, to cool circulating water in an amount of 1 m ³ / h (1000 kg / h) with an inlet temperature of 45 ° С to an outlet temperature of 25 ° С, the following amount of air will be required according to the heat balance equation:

$$B\mathrm{at}=\frac{G_{\mathrm{at}}\left(i_{\mathrm{one}}-i_2\right)}{i_{\mathrm{one}\mathrm{at}}}=\frac{1000\left(45.1-25.1\right)}{7.88-4.73}=6349.2m^3/h,$$

where G _in = 1000 kg / h is the flow rate of recycled water for cooling;

i ₁ = 45.1 kcal / kg - heat content of water at the entrance to the ejection device (at a temperature of 45 ° C);

i ₂ = 25.1 kcal / kg - heat content of water at the outlet of the ejection device (at a temperature of 25 ° C);

i ₃ = 7.88 kcal / m ³ - heat content of air at the outlet of the ejection device (at a temperature of 25 ° C);

i _2c = 4.73 kcal / m ³ - heat content of air at the entrance to the ejection device (at an outdoor temperature of 15 ° C).

The objective of the proposed technical solution is to create an ejection device for cooling the circulating water, in which the above disadvantages are absent.

The problem is achieved in that the device for cooling the circulating water of the production equipment comprises a housing with vertical and horizontal ejection channels; the ejection channel is equipped with a nozzle, and the ejection channel is equipped with a nozzle. The air exhaust shaft is provided in its upper part with drop eliminators, which in a concrete example are a set of parallel inclined plates. The receiving tank is connected by a line through the pump to the cooling system of the production equipment: the receiving tank is connected through the line to the pumps, while the pump is connected by a line to the nozzle of the vertical ejection channel, and the pump is connected by the line to the nozzle of the horizontal ejection channel; In the lower part of the housing there is a line for draining water from the housing to the receiving tank. The device is equipped with an additional ejection chamber with two (in this example) nozzles inside it and a droplet eliminator located in the upper part of the chamber; air intake windows are located in the lower part of the chamber, while the nozzles are connected by a highway to the cooling system of production equipment; in the lower part of the additional ejection chamber, a line is made for draining water from it into a receiving tank; in the receiving tank, a partition is made with an opening in its lower part, separating the drainage zone of water from the additional ejection chamber from the drainage zone into the reception tank of water from the housing; the air intake windows of the additional ejection chamber are equipped with forced air supply elements, while a temperature sensor is installed in the receiving tank, connected respectively by electric circuits to the frequency converters of the electric motors of the water supply pumps for cooling the technological equipment and to the frequency converters of the electric motors of the forced air supply elements, moreover, on the housing an ejection device behind the drop catchers is placed a rotary wind turbine.

The drawing shows a schematic diagram of a device for cooling circulating water.

The ejection device for cooling the circulating water of the cooling system 1 of the production equipment comprises a housing 2 with vertical 3 and horizontal 4 ejection channels; the ejection channel 3 is provided with a nozzle 5, and the ejection channel 4 is provided with a nozzle 6. The air discharge shaft 7 is provided in its upper part with droplet eliminators 8, which in a specific example are a set of parallel inclined plates. The receiving tank 9 is connected by a line 10 through a pump 11 to the cooling system of the production equipment: the receiving tank 9 is connected through a line 13 with pumps 14.15, while the pump 14 by a line 13 is connected to the nozzle 5 of the vertical ejection channel 3, and the pump 15 by a line 32 is connected to nozzle 6 of the horizontal ejection channel 4; in the lower part of the housing 2 there is a line 16 for draining water from the housing 2 into the receiving tank 9. The device is equipped with an additional ejection chamber 17 with two (in this example) nozzles 18, 19 inside it; a droplet eliminator 20 is located in the upper part of the chamber 17 and is made in the same way as a droplet eliminator 8; air intake windows 21, 22, 23 are located in the lower part of the chamber 17, while the nozzles 18, 19 are connected by a highway 24 to the cooling system 1 of the production equipment; in the lower part of the additional ejection chamber 17, a line 25 is made for draining water from it to a receiving tank 9; in the receiving tank 9, a partition 26 is made with an opening 27 in its lower part separating the water discharge zone 28 from the additional ejection chamber from the drain zone 29 into the water receiving tank from the housing 2; the air intake windows 21, 22, 23 of the additional ejection chamber 17 are provided with forced air supply elements 30, 33, 34, while a temperature sensor 35 is installed in the receiving tank 9 in zone 28, connected respectively by electrical circuits 36 to the frequency converters of the electric motors of the pumps 14, 15 water supply for cooling technological equipment and with frequency converters of electric motors of the forced air supply elements 30, 33, 34, and on the housing 2 of the ejection device behind the drip traps 8, 20 sizes Rotary wind turbine 37.

A device for cooling the circulating water works as follows.

Water heated by the cooling system 1 of the production equipment, through line 24, enters the nozzles 18, 19 located in the additional ejection chamber 17. When spraying hot water due to the ejection effect through the air inlets 21, 22, 23, cold air enters the chamber 17, which , mixed with finely divided water droplets, cools the water and through the drip tray 20 goes beyond the device. Chilled water from the lower part of the chamber 17 along the line 25 is discharged into the zone 28 of the receiving tank 9.

At the optimum temperature of the chilled water, it flows through the hole 27 in the lower part of the partition 26 of the receiving tank 9 from zone 28 to zone 29, from where it enters the cooling system 1 of the production equipment via pump 11 through line 12.

When the chilled water temperature is above the optimum, which may vary due to the thermal load of the production equipment and the outdoor temperature, the temperature sensor 35, installed in the receiving tank 9 in zone 28, sends a signal to the frequency converters of the electric motors of the pumps 14, 15 and speed converters of electric motors of elements 30, 33, 34 of forced air supply, which ensures automatic operation and their economical operation.

In this case, the cooled water through the line 13 is pumped by pumps 14, 15 to the nozzles 5 of the vertical ejection channel 3 and the nozzles 6 of the horizontal ejection channel 4. When spraying water due to the ejection effect through the air ducts, cold air is sucked into the casing 2, which is mixed with finely divided water a drop, cools the water. Cooled water from the lower part of the housing 2 along the line 16 is discharged into the zone 29 of the receiving tank 9, from where it is fed through the line 10 by a pump 11 through the line 12 to the cooling system 1 of the production equipment. The heated air after the droplet eliminators 8, 20 enters the rotary wind turbine 37, located on the housing of the ejection device 2, in which the potential energy of the turbulent flow is used to produce electrical energy.

As a device for converting the potential energy of a turbulent flow of warm air into electrical energy, a rotary wind turbine made according to patent RU 2210000 can be used.

A comparative analysis of the invention and the prototype allows us to conclude that it is new that a temperature sensor is installed in the receiving tank, which is connected respectively by electric circuits with frequency converters of electric motors of water supply pumps for cooling equipment and frequency converters of electric motors of forced air supply elements, with this case an ejection device behind the drop catchers is placed a rotary wind turbine.

In the device for cooling circulating water, the applicant has not identified known technical solutions that are identical to the set of features of the claimed device, which determines, according to the applicant, compliance with the criterion of "novelty."

Comparison of the proposed solution not only with the prototype, but also with other technical solutions in the art allows us to conclude that the criteria of the invention are “inventive step”.

The invention allows to automatically ensure the optimum temperature of the cooling water supplied to the processing equipment, depending on the heat load of the processing equipment and changes in the temperature of the outside air, through the use of a temperature sensor installed in the receiving tank, connected respectively to frequency converters of the speed of the electric motors of the supply pumps of the cooled water and speed converters of electric motors of forced air supply elements ha, as well as the possibility of using the potential energy of the turbulent flow of warm air removed from the ejection device, a rotary wind turbine for generating electrical energy.

Claims (1)

An ejection device for cooling the circulating water of the cooling system of industrial equipment, comprising a housing with vertical and horizontal ejection channels equipped with nozzles and an air exhaust shaft equipped with droplet eliminators in its upper part, a receiving tank connected by highways into which the pumps are connected, with a cooling system of industrial equipment , with the nozzle of the vertical ejection channel and with the nozzle of the horizontal ejection channel, while in the lower part of the housing a highway for draining water from the housing into the receiving tank, an additional ejection chamber with one or more nozzles inside it, with a drip catcher in its upper part and one or more air intake windows in its lower part, nozzles placed in the additional ejection chamber are connected by a highway to the system cooling of production equipment, in the lower part of the additional ejection chamber, a line is made for draining water from it into a receiving tank, in which a partition is made with a hole in the lower part, separating it draining water into the receiving tank from the housing from the drainage zone into it from an additional ejection chamber, the air intake windows of which can be equipped with forced air supply elements, characterized in that a temperature sensor is installed in the receiving tank, which is connected by electrical circuits to the frequency converters of the electric motors of the pumps water supply for equipment cooling and speed converters of electric motors of forced air supply elements, while on the ejection housing Foot drop catchers arranged apparatus for wind turbine rotor.